1) Your *DVDRip.XviD.avi file seems OK. Its a high profile L5 of MPEG4 video but mencoder must transcode it to mpeg2 video (and mpeg2ps container with MP3 audio), do you have a debug.log file with mencoder command line? So MPEG_PS_PAL renderer profile will be used.

2) In your .conf file,- The symbol | is missing between brackets (BRAVIA KDL.+EX5) and (BRAVIA KDL.+HX7)UserAgentAdditionalHeaderSearch=(BRAVIA KDL.+5[0-9]{3})|(BRAVIA KDL.+WE5)|(BRAVIA KDL-[0-9]{2}XBR9)|(BRAVIA KDL.+EX5)|(BRAVIA KDL.+HX7)- MediaInfo=false so you don't use MediaInfo for codec detection, and all files extensions list on "TranscodeExtensions=" will be transcode, ok why not!

If you change the MediaInfo Value to true, all supported media formats of this renderer will be streamed or remux (Tsmux), the rest will be transcoded."TranscodeExtensions=" and "StreamExtensions=" lines will be ignored, so could be comment.

Bravia HX703, only support mpeg2ps, mpeg2ts with mpeg2 or h264(AVC) video and ac3,mp3,aac audio. So you must change your .conf with following